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Free · Class 4–7 · 4 worksheets · answer keys · practise online · set 75

Angles worksheets — types of angles and angle sums

Free angles worksheets for Class 4 to 7: name the type of angle (acute, right, obtuse, straight, reflex), complementary, supplementary and triangle angles — with answers.

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Types of angles (Class 4–5)Complementary angles (Class 6–7)Supplementary angles (Class 6–7)Angles of a triangle (Class 6–7)

Types of angles

Class 4–5 · Worksheet 1 · set 75
Name:Date:Score:    / 8

Name the type of the marked angle: acute, right, obtuse, straight or reflex.

  1. Type of angle?
  2. Type of angle?
  3. Type of angle?
  4. Type of angle?
  5. Type of angle?
  6. Type of angle?
  7. Type of angle?
  8. Type of angle?

Complementary angles

Class 6–7 · Worksheet 2 · set 75
Name:Date:Score:    / 12

Find the complement.

  1. Complement of 72° =
  2. Complement of 78° =
  3. Complement of 10° =
  4. Complement of 68° =
  5. Complement of 75° =
  6. Complement of 18° =
  7. Complement of 20° =
  8. Complement of 65° =
  9. Complement of 47° =
  10. Complement of 77° =
  11. Complement of 9° =
  12. Complement of 36° =

Supplementary angles

Class 6–7 · Worksheet 3 · set 75
Name:Date:Score:    / 12

Find the supplement.

  1. Supplement of 136° =
  2. Supplement of 73° =
  3. Supplement of 13° =
  4. Supplement of 35° =
  5. Supplement of 138° =
  6. Supplement of 66° =
  7. Supplement of 41° =
  8. Supplement of 58° =
  9. Supplement of 119° =
  10. Supplement of 62° =
  11. Supplement of 168° =
  12. Supplement of 111° =

Angles of a triangle

Class 6–7 · Worksheet 4 · set 75
Name:Date:Score:    / 8

Find the third angle.

  1. A triangle has angles 59° and 51°. Find the third angle.
  2. A triangle has angles 59° and 52°. Find the third angle.
  3. A triangle has angles 95° and 24°. Find the third angle.
  4. A triangle has angles 53° and 92°. Find the third angle.
  5. A triangle has angles 95° and 35°. Find the third angle.
  6. A triangle has angles 85° and 28°. Find the third angle.
  7. A triangle has angles 84° and 24°. Find the third angle.
  8. A triangle has angles 99° and 32°. Find the third angle.

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Questions

What are the 5 types of angles?

Acute (less than 90°), right (90°), obtuse (90°–180°), straight (180°) and reflex (180°–360°).

Are these worksheets free?

Yes — print them or save as PDF free. Every worksheet has an answer key.

How do I get different questions?

Press “🔄 New set” — the questions change (maths numbers are new every time; English sentences are shuffled).

How do I print only one worksheet?

Press “🖨️ Print” on that worksheet. Tick “with answer key” if you want the answers on a second page.

Can my child do this worksheet online, like a quiz?

Yes — press “▶️ Practise online” on any worksheet. The questions come one at a time with instant marking, a score at the end and a review of mistakes. No sign-in is needed.